Finding the Fourth Proportional to 42,017.10, 58,998.90 and 42,017.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,017.10 : 58,998.90 = 42,017.10 : x
2. Step 2: Convert to fraction form
   42,017.10/58,998.90 = 42,017.10/x
3. Step 3: Cross multiply
   42,017.10x = 58,998.90 × 42,017.10
4. Step 4: Simplify right side
   42,017.10x = 2,478,962,681.19
5. Step 5: Solve for x
   x = 2,478,962,681.19/42,017.10
6. Step 6: Final answer
   x = 58,998.90